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Cornerstone · Grades 3–5 Keystones #1 17 February 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 17 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 50

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.93cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 2:1:1

    Answer: 30, 15 and 15
  5. 5. Statistics Mean

    Find the mean of: 17, 15, 18, 2

    Answer: 13

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